my Volkswagen Golf stalls when I come to a stop what's causing this

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Clean the Throttle Body

• Remove the air intake duct to access the throttle body.
• Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
• Reinstall the air intake duct securely.

3. Test and Clean the Idle Air Control (IAC) Valve

• Locate the IAC valve, typically mounted on or near the throttle body.
• Disconnect the electrical connector and remove the valve.
• Clean the IAC valve with throttle body cleaner and a soft brush.
• Reinstall the IAC valve and reconnect the electrical connector.

4. Inspect and Replace Spark Plugs

• Remove the ignition coil cover if necessary to access the spark plugs.
• Use a spark plug socket to remove the old spark plugs.
• Inspect the spark plugs for wear; replace them if they are worn or fouled.
• Install new spark plugs according to the manufacturer’s specifications (typically torque to 15 ft-lbs).

5. Check for Vacuum Leaks

• Visually inspect all vacuum lines for cracks or disconnections.
• Use a smoke machine or a propane torch (without igniting) to detect leaks.
• Replace any damaged vacuum lines identified during inspection.